Invasions, Military campaigns, Political alliances, Soccer, Ballet, Horse racing, Fairs and festivals, Whales, Humanitarian aid, Heads of state, German Invasion of Yugoslavia, April 6-17, 1941, Siege of Tobruk, January-December 1941, War and Violence, World History, 20th Century in World History (1914--2000)

Embassies and consulates, Fashion, Athletic events, Athletes, Bridges, Humanitarian aid, Heads of state, Invasions, Military campaigns, German Invasion of Greece, April 6-27, 1941, German Invasion of Yugoslavia, April 6-17, 1941, World War II, 1939-1945, War and Violence, World History, 20th Century in World History (1914--2000)

Winter, Military alliances, Invasions, Military campaigns, Communism, Religious rites and ceremonies, Political alliances, Athletic events, Volunteers, Youth, Bridges, Heads of state, Humanitarian aid, German Invasion of Soviet Union, June 1941-1945, Siege of Tobruk, January-December 1941, War and Violence, World History, 20th Century in World History (1914--2000)

Political alliances, Invasions, Women's rights, Athletic events, Harvesting, Bombardment, Siege of Tobruk, January-December 1941, German Invasion of Soviet Union, June 1941-1945, Bombing of Pearl Harbor, December 7, 1941, War and Violence, World History, 20th Century in World History (1914--2000)

Birthdays, Employment opportunities, Agricultural conditions, Spring (Season), Athletic events, Religious rites and ceremonies, Military alliances, Military campaigns, Energy industry, Invasions, Heads of state, World War II, 1939-1945, German Invasion of Soviet Union, June 1941-1945, War and Violence, World History, 20th Century in World History (1914--2000)